抄録
The themodynamic properties of TiCxOy in equiliblium with carbon were determined by measuring the CO pressures in equilibrium with TiCxOy specimens in the temperature range from 1573 K to 2200 K. The results obtained are as follows:
(1) The standard Gibbs energy of formation of TiCxOy can be expressed by the following equations:
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oindent(2) The standard Gibbs energy change for the reaction (1/2)O2(pO2=1 atm)→O(Henrian standard state xO=1) is:
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oindent(3) The Henrian activity coefficient of O in TiCxOy hardly changes with temperature and can be written as
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